Pump for vacuum-cleaners.



I. BARKER. PUMP FOR VACUUM CLEANERS.

APPLICATION FILED FEB. 28, 1912.

1,078,329. Patented Nov. 11, 1913.

g 2 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH 60., WASHINGTON, u. c.

I. BARKER. PUMP FOR VACUUM CLEANERS.

APPLIGATIQN FILED FEB. 28, 1912.

Patented NOV. 11, 1913.

2 SHEETS-SHEET 2.

WITNESSES ATTORNEYS o COLUMBIA PLANOGIIAPH co., WASHINGTON. I). c.

mvrrnn sra'ras r n nnr onrion.

IRVING BARKER, 0F SPRINGFIELD, ILLINOIS.

PUMP FOR VACUU1VI-GLEAN'ERS;

To all whom it may concern:

Be it known that I, IRVING BARKER, a citizenof the United States, and a resident of Springfield, in the county of Sangamon and State of Illinois, have invented a new and Improved Pump for Vacuum-Cleaners, of which the following is a full, clear, and eX- act description. 7

The invention is intended more specifically for embodiment in manually-operated vacuum cleaners.

The present invention is distinguished by Various new features, including an element securable to the body of the operator, and

connections between the pumping devices and sand element, the. arrangement belng such that both hands of the operator are free to manipulate the apparatus to cause it to produce a pumping action. I

The invention is further distinguished by various other new features and novel combinations of the parts, as will appear from the more specific description hereinafter to be given in connection with the constructional form of the apparatus illustrated as one practical embodiment of the invention.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding partsin all the figures.

Figure 1 is a plan view of a vacuum cleaner embodying my invention, a portion of i thehandle being omitted; Fig. 2 is a longitudinal vertical section; Fig. 3 is a cross section on the line 3-3 of Fig. 2; Fig. 4 is a cross section on the line 14L of Fig. 2; Fig. 5 is an elevation on a reduced scale, of the complete apparatus including one form. of the mentioned element which is securable to the body of the operator, preferably around the waist; and Fig. 6 is a side elevation showing the apparatus differently adjusted as hereinafter more particularly eX- plained, the mentioned element securable to the body of the operator being removed.

In constructing a vacuum cleaner 1 in accordance with the particular form illus trated in the drawings, a frame 10 is provided, having a rearwardly projecting handle 11 of any suitable form at the back, and in said frame the shell 12 is mounted and provided with an inlet nipple 13 at the front end, through which air is drawn in the operation of the device,.and to=which an inlet-pipe section is secured, the said pipe Specification 0f LettersPatent.

Application filed February 28, 1912.

Patented Nov. 11, i913.

Serial 1W0. 680,440.

; section in the embodiment shown being pro- :be of any approved form. In the present ginstance the inlet-pipe section 1 1 is secured j tothe forward end of the frame 10 by conlverging the side frame members as at 10 gand forming them into clamp jaws 15 that ;receive the inlet-pipe section 14 between 5 them, the jaws being provided with a clampging bolt 16 or equivalent device. Connec- ;tion between the inlet-pipe section 145 and ithe air inlet nipple 13 is effected in any isuitable manner, as by a sleeve 17 and collar 18. 7

Within the shell 12 and desirably at the front thereof is a dust receiver, in this instance a bag 20, and rearward of the bag jwithin the shell, a pump is arranged, illus- Q trated as a cylinder 21 spaced from the shell Q12, and a piston 22 is mounted to reciprojcate in the cylinder 21. The piston rod 23 extends rearward through the cylinder 21 and the shell 12, and has connection with a 1 lever 21, fulcrmned as at 25, on the handle 11. The upper end of the long arm of the lever is pivoted to a connecting rod 26, and

the opposite end of said connecting rod is 1 adapted to be held to the body of the oper- Qator by a suitable element for the purpose, *illustrated in this example as a simple hari'ness consisting of a belt 27, adapted to encircle the waist of the operator.

Provision is made for removably clampj ing the shell 12 to the frame 10, and to this 1 end a clip 28 extends over the top and down the sides of the shell 12, the shackle bar 29- of the clip extending at the under side of the shell 12 and being bolted to the ends of the gclip, as shown best in Fig. 3. It will be 1 observed in Fig. 3 that the clip and shackle bar 29 embrace the side members of the Qframe 10 and firmly clamp the same to the shell 12. Rearward of the clip 28 the frame is provided with a stirrup 30, forming a Brest for the rear end of the shell. 1 I have shown that the rear ends 10 of the frame members converge and are then brought intoparallelism to constitute the handle 11, but it will be understood that any other suitable handle may besubstituted, although the deseribed form possesses its advantages.

The front end of the shell 12 advantageously is closed by a removable cover 31, which affords ready access to the bag 20, or other dust receiver, for removing the collected dust. The nipple 13 is secured to the cover 31, preferably at a point below the center, and a bail 32 holds the cover tightly in place, the said bail being pivoted at its ends to any suitable portion of the frame. Connection between the frame 10 and the bail 32 may be through the medium of a lever 34, Figs. 1 and 2, said lever being fulcrumed as at 35 on the frame 10, and pivoted as at 36 with the rear end of the bail arm. The arrangement is such that the bail may be swung over the cover 3t, to assume approximately a central position against the front end of said cover, and by proper manipulation of the lever 34:, the bail may be caused to press tightly against the cover, or the pressure of the bailbe relieved and the cover removed, as will be readily under stood.

The dust bag 20 desirably has an inner supporting frame member 38 in the form of a wire loop or otherwise, to maintain the form of the bag during the operation of the pump.

Although I wish it understood that my invention is not limited to the improved doubleacting pumping device illustrated, nevertheless this form of pump possesses great merit in itself when employed in connection with the element to be worn by the operator. Both the front cylinder head a0 and the rear head etl are formed with ears 4:2, 43 respectively, and bolts let by engaging said ears clamp the cylinder heads to the cylinder 21. Only the mentioned cars 42, as extend beyond the walls of the cylinder 21, so that there is free communication at the ends of the space 5L5 which intervenes the shell 12 and the cylinder 21. There is a space 16 provided between the rear end 12 of the shell 12 and the rear cylinder head 41. Thus the space as surrounding the cylinder 21 communicates at its front end with the space or chamber in which the dust bag 20 is located, and said space 45 communicates at its rear end with the space 46 formed be tween the rear cylinder head and the rear end of the shell. The arrangement of the inlet and discharge valves makes the pump double-acting. Thus the front cylinder head 40 has an inlet valve 47 and the rear cylinder head an inlet valve as, it being essential only that said valves be in front and back of the piston 22, as will be understood. The inlet valve 47 communicates directly with the chamber in which the dust bag 20 is located, while the inlet valve 48 leads inward to the cylinder from the space 16. Discharge valves 49, 50, are provided in connection with the cylinder 21,. and located respectively in front of and behind the piston 22, said valves commanding the outer ends of the short exhaust pipes 51, 52, eX- tending from the interior of the cylinder 21 outward to the shell 12 on which the valves 49, 50 seat.

lVith the described construction, upon a forward movement of the piston 22 from the position shown in Fig. 2, air will be drawn through the rear inlet valve 48, space t6, and space 45, thus causing a suction through the bag 20, the nipple 13, the inlet pipe section 14; and the suction nozzle 14 At the same time air is discharged from in front of the piston to the exhaust pipe 51 and discharge nozzle 49. Upon the return or rearward stroke of the piston 22, the mentioned inlet valve 48 will close, as also the discharge nozzle t9, the front inlet valve 47 in the head 40 will open, drawing in air in front of the piston, the air at the back of the piston finding outlet through the eX- haust pipe 52 and discharge valve 50. A relative movement of the shell and the pumping device 22 is effected in the follow ing manner: The operator having secured the strap 27 around his waist, will have both hands available for grasping the handle 11, so that by reciprocating said handle, the shell will be moved forward and back r latively to the piston 22, the frame and shell being in rigid relation. During the reciprocation of the handled shell, there will be a relative movement between the lever 2 the piston 23, and the connecting rod 26, the lever rocking on the pivot 25. In the instance shown, I construct the short arm of the lever 24 in two telescopic sections 24, 24 Fig. 5, which accommodates the lever to the changed position of the piston rod 23, and at the same time makes the connec tion readily removable when the machine is to be dismembered.

In order that an owner of my improved machine may not be confined to the manipulation of such an adjustment, and a manipulation of the machine as will involve the use of the element 27 attachable to the body of the operator, I make provision for causing the necessary pumping action or relative movement of the shell and piston,

by actuating the lever 2 f whileleaving the H frame 10 and the shell 12- stationary; such an adjustment is illustrated in Fig. 6. In this figure I have shown a length of hose provided with an inlet tip or nozzle 14". VVith the adjustment shown in Fig. 6, the operator reciprocates the lever 2%, while the said operator or another attendant manipulates the length of hose 14?.

Having thus described my invention, I

claim as new, and desire to secure by Letters Patent,

1. In a vacuum cleaner, a frame, a shell on said frame, a pump arranged in connection with said shell and comprising a reciprocating piston and piston rod, a lever fulcrumed on the frame having operative and means for harnessing said rod to an operator.

In a vacuum cleaner, the combination of the following elements: a frame, a shell removably resting on said frame, means detachably holding the shell to the frame, a pump operating in the shell, a cover removably attached to the shell at the front end, said cover having an inlet leading to the interior of the shell, and a cover-retaining member carried by the frame to swing thereon over the cover and against the latter when the shell and cover are in place.

4:. In a vacuum cleaner, the combination of a shell having an air inlet, a pump cylinder, a piston operating in the cylinder, the said cylinder being spaced from the shell at the sides and rear end forming a surrounding chamber and a communicating rear end chamber, the surrounding chamber having free communication with the air inlet of the shell, a valved inlet communicating with the inlet of the shell and leading to the interior of the pump cylinder,

in front of the piston, a valved inlet-0pening leading from the mentioned rear end space to the interior of the pump cylinder at the back of the piston, and valved discharge openings from the pump cylinder at the front and back of the piston.

5. In a vacuum cleaner, the combination of a frame having a rearwardly extending rigid handle, a pump cylinder supported on said frame, a piston operatin in said cylinder, a piston rod therefor, a forwardly extending lever crossing the said handle and fulcrumed thereon, one end of the lever having operative connection with the piston rod, a body belt worn by an operator, and a holding connection between the belt and the lever at the end of the latter opposite that to which the piston rod is connected.

6. In a vacuum cleaner, the combination of a shell, pump elements operating in the shell, a frame having a seat for the shell, a clamping member arching upward over the shell from the seat and having a separable connection to permit release of the shell, and a swinging bail pivoted on the shell and movable over the front of the shell.

In testimony whereof I havesigned my name to this specification in the presence of two subscribing witnesses.

IRVING BARKER.

Witnesses:

' H. S. PATTON,

C. J. CHRISTOPHER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

